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19 Cards in this Set
- Front
- Back
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Herpesviridae |
most prevalent DNA viruses enveloped, polyhedral, linear dsDNA, latent - never cured (hides in neurons) |
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Herpes virsus 1 and 2 |
Skin lesions HHV1: cold sores/fever blisters/ whitlow HHV2: genital herpes |
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Varcella zoster |
HHV 3 Varcella (chicken pox)
Transmission: respiratory droplet, contact with blister secretions, fomites |
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Reactivation of Varcella zoster |
Shingles latent virus reactivates S/S: cluster of vesicles along nerve paths in skin, mild itching to continuous severe pain |
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Epsein-Barr visues |
HPP 4 - Infectious Mononucleosis (Mono) Transmission: usually saliva fever, sore throat, fatigue, swollen lymph nodes Enters blood stream, invades B lymphocytes, becomes latent in B cells, Tc cells destroy infected B cells |
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Human papillomavirus |
HPV- warts Benign growths- skin, mucous membranes *increased risk of cancer |
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Hepatitis A |
Hepatitis transmitted: fecal oral S/S: jaundice, anorexia, abdominal discomfort, fever chills self limiting-vaccine available |
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Hepatitus B |
Hepatitis Transmission: blood, semen S/S: asymptomatic or mild symptoms, long term can cause severe liver damage- jaundice vaccine available |
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Hepatitus C |
Hepatitis Transmission: blood, semen Chronic - high mutation rate helps escape immune pressures, new treatment available S/S: often few, fatigue, joint pain, belly pain, jaundice, dark urine NO VACCINE |
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Hepatitus D |
Requires Hep B to become virulent Transmission: blood, semen cirrhosis of the liver, liver cancer HepB vaccine indirectly protects against HepD |
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Hepatitus E |
Enteric hepatitus Transmission: fecal/oral S/S: mild infection except for pregnant women(mortality rate high in 3rd trimester) NO VACCINE |
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Noroviruses (Norwalk-like) |
Gastroenteritis leading cause of "stomach flu" in adults Transmitted: ingestions via contaminated food/water, fomites (billions in stool or vomit) onset 24-48 hr after transmission, self limiting |
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Rubella virus |
Rubella, aka German meseals Transmission: respiratory droplet, highly contagious S/S: rash, pink to red spots. Adults-arthritis or encephalitis. Can cross placenta-multiplies in embryonic cell. rubella-belly |
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HIV |
Retro virus- has outer envelope Transmission: blood, semen, saliva, vaginal secretions, breast milk Destroy immune system- cells tagert T helper cells, dendritic cells, macrophages, smooth muscle cells Aids is a syndrome CD4 count below 400 |
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Measels virus |
Rubeola/measels S/S: Koplik's spots, Macular rash (white spots near molars), photophobia, headache, sore throat, dry cough Rare complications: encephalitis, pneumonia vaccine available |
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Mumps virus |
Disease: Mumps S/S: parotid glands enlarge, pain just below the air, infection of upper respiratory tract, then spread to other organs Rare complications: meningitis, pancreatitis, inflammation of ovaries/testes vaccine available |
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Ebola virus |
(EVD) Filamentous virus Transmission: direct contact with blood, secretions, bodily fluids S/S: sudden onset fever, intense weakness, muscle pain, headache, sore throat, vomiting, diarrhea, rash, impaired kidney and liver function. Mortality 90% depending on species |
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Influenza |
Segmented genome (8 pieces) Antigenic drift- small changes in virus Antigenic shift- big changes in virus Pandemic predicted |
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Incluenza A and B |
Disease: influenza aka Flu S/S: fever, malaise, headache, body aches, -rarely attach cells outside the lungs -infected epithelial cells killed increase susceptibility to secondary infections |
